# Label printer CITIZEN SYSTEMS CL-S631 — Direct thermal / Thermal transfer, 300×300 DPI, 100 mm/s, Wired & Wireless Wi‑Fi

**URL:** https://aio.lv/en/product--citizen-systems-cls631iinebxx--12263471
**Data updated:** 2026-04-12 10:51 (EEST)
**Category:** POS & Label Printers
**Manufacturer:** CITIZEN SYSTEMS
**Manufacturer code:** CLS631IINEBXX
**EAN:** 5060198390470
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The CITIZEN SYSTEMS CL-S631 is a professional label printer supporting both direct thermal and thermal transfer printing. It delivers up to 300×300 DPI resolution and a print speed of 100 mm/sec. Connectivity includes wired interfaces and Wi‑Fi plus a USB port. Designed for retail, logistics and manufacturing for durable barcode, shipping and product labels.

## Long description

The Citizen CL-S631 label printer is a compact desktop model offering direct thermal and thermal transfer printing. It delivers a high maximum resolution of 300 x 300 dpi for clear reproduction of logos, images and EAN-compliant barcodes. The printer supports both wired and wireless connectivity, including USB, Ethernet and optional Wi‑Fi, and includes Cross-Emulation™ with Zebra® and Datamax® emulations for broad compatibility with existing label workflows.
Advantages
The CL-S631 combines a small desktop footprint with professional print quality at 300 dpi and a print speed up to 100 mm/sec. Cross-Emulation™ simplifies integration by supporting Zebra and Datamax command languages, while multiple connectivity options (USB, Ethernet, Wi‑Fi) allow flexible placement on networks. The unit supports direct thermal and thermal transfer media, making it suitable for a variety of label types and lifespans.
Suitable for
Retail barcode and price labeling
Product and asset labeling requiring high-resolution logos or small text
Office or light industrial shipping and logistics labels
Environments needing flexible wired and wireless connectivity
When it may not be suitable
This desktop printer is intended for low- to medium-volume label printing; it may not be appropriate for high-volume industrial production lines that require faster speeds or large roll capacities. Environments requiring specialized media handling or very wide print widths beyond 10.4 cm should consider industrial-class printers instead.
Key specifications
Print technology: Direct thermal and thermal transfer
Maximum resolution: 300 x 300 dpi
Maximum print width: 104 mm
Maximum print speed: 100 mm/sec
Built-in barcode symbologies: Code 11, Code 128 (A/B/C), Code 39, Code 93, EAN-13, EAN-8, Industrial 2/5, Interleaved 2/5, PDF417, QR Code, UPC-A, UPC-E
Connectivity: USB, Ethernet, optional Wi‑Fi (wireless and wired support)
Weight: 4.5 kg
Colour: Black
How to use
Install the printer on a stable desktop surface, connect to power and select the desired connectivity method (USB, Ethernet or Wi‑Fi). Load label roll and, if using thermal transfer, install the ribbon according to the user guide. Configure printer drivers or emulation mode (Zebra/Datamax via Cross-Emulation™) on your computer or POS system, adjust media settings for label size and print darkness, and perform a test print to confirm alignment and quality.
What to consider before purchase
Expected monthly print volume to ensure desktop capacity meets demand
Whether you require thermal transfer ribbons or will use direct thermal media
Required connectivity (USB, Ethernet, or Wi‑Fi) and network compatibility
Maximum label width needed (printer supports up to 104 mm)
Usage recommendations
Use high-quality media and the correct ribbon type for thermal transfer jobs, keep firmware and drivers up to date, and choose the appropriate emulation mode for seamless integration with existing label software.

## Specifications

### Printing

| Feature | Value |
|---|---|
| Colour | No |
| Maximum resolution | 300 x 300 |
| Print technology | Direct thermal / thermal transfer |
| Print speed | 100 mm/sec |
| Maximum printing width | 104 mm |
| Minimum print length | 1625.6 mm |

### Paper handling

| Feature | Value |
|---|---|
| Media thickness | 0.063 - 0.025 |
| Ribbon length | 360 m |
| Maximum roll diameter | 125 mm |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84433210 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 4.5 kg |
| Height | 270 mm |
| Width | 231 mm |
| Depth | 289 mm |

### Ports & interfaces

| Feature | Value |
|---|---|
| Ethernet LAN | No |
| Connectivity technology | Wired & Wireless |
| USB 2.0 ports quantity | 1 |
| Wi-Fi | Yes |
| USB port | Yes |

### Features

| Feature | Value |
|---|---|
| Internal memory | 16 MB |
| Flash memory | 4 MB |
| Built-in barcodes | Interleaved 2/5, Code 11, Code 128 (A/B/C), Code 39, Code 93, EAN13, EAN8, Industrial 2/5, PDF417, QR Code, UPC-A, UPC-E |
| Page description languages | EPL2, ZPL II |

### Network

| Feature | Value |
|---|---|
| Wi-Fi standards | 802.11g, 802.11b |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Control type | Buttons |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CITIZEN SYSTEMS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CITIZEN SYSTEMS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: maximum printing width, print speed, weight, ethernet lan, wi-fi, print technology, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12263471/68180210_large.webp